adjective
1. lacking teeth
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most birds are toothless
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a toothless old crone
• Ant: ↑toothed
• Similar to: ↑edental, ↑edentate, ↑edentulate, ↑edentulous
2. lacking necessary force for effectiveness
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a toothless piece of legislation
• Similar to: ↑ineffective, ↑uneffective, ↑ineffectual
Useful english dictionary. 2012.